Senderos and nature arebeautiful, see other comments.
Campground is nice but you cannot drive inside with your car, you have to park along the fence (you can sleep in a tent of course). We payed 10.000 pp and refused to pay 35.000 for our van as normal cars pay only 15.000 and if you can not park on the campsite it doesn't make sense to pay more, they accepted it.
Water was not available after 16:00, seems to happen frequently, facilities are simple and cleanish, only cold showers right now.
Place: Parque Nacional Ybycui
Visited: June 29th, 2019
Location: -26.07807, -56.85042